/* style.css */
/* Hệ thống thiết kế giao diện cao cấp - Dự án Quản lý Thuê nhà */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #090d16;
    --bg-secondary: rgba(17, 25, 40, 0.75);
    --bg-card: rgba(23, 33, 53, 0.6);
    --border-color: rgba(255, 255, 255, 0.07);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #06b6d4;      /* Neon Cyan */
    --color-primary-glow: rgba(6, 182, 212, 0.25);
    --color-secondary: #8b5cf6;    /* Violet */
    --color-secondary-glow: rgba(139, 92, 246, 0.2);
    --color-success: #10b981;      /* Emerald Green */
    --color-success-glow: rgba(16, 185, 129, 0.2);
    --color-warning: #f59e0b;      /* Amber */
    --color-warning-glow: rgba(245, 158, 11, 0.2);
    --color-danger: #f43f5e;       /* Rose Red */
    --color-danger-glow: rgba(244, 63, 94, 0.2);
    
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --border-radius: 16px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    line-height: 1.6;
}

/* Thanh cuộn tùy chỉnh */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Tiêu đề & Cấu trúc chính */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo-container h1 {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Thẻ chỉ số tổng quan (Stat Cards) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-secondary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
}

.stat-card.revenue::before { background: var(--color-success); }
.stat-card.pending::before { background: var(--color-warning); }
.stat-card.tenants::before { background: var(--color-secondary); }

.stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Tabs & Layout Dashboard */
.tabs-navigation {
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.03);
    padding: 6px;
    border-radius: 12px;
    width: fit-content;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--color-primary);
    color: #000;
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease-in-out;
}

/* Bố cục nội dung dạng lưới (Two Columns) */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1.2fr 1.8fr;
    gap: 28px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Thiết kế Form & Thẻ Card */
.content-card {
    background: var(--bg-secondary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--card-shadow);
    margin-bottom: 28px;
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.card-title i {
    color: var(--color-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 16px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="password"],
select,
textarea {
    width: 100%;
    background: rgba(10, 15, 30, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    transition: var(--transition-smooth);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* Nút bấm (Buttons) */
.btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    border: none;
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.btn-success {
    background: var(--color-success);
    color: #000;
    border: none;
}

.btn-success:hover {
    background: #059669;
    box-shadow: 0 0 12px var(--color-success-glow);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border: none;
}

.btn-danger:hover {
    background: #e11d48;
    box-shadow: 0 0 12px var(--color-danger-glow);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
}

/* Thiết kế phần dịch vụ phụ thêm */
.special-services-container {
    background: rgba(0, 0, 0, 0.15);
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 20px;
}

.special-service-row {
    display: grid;
    grid-template-columns: 1fr 1fr 40px;
    gap: 12px;
    margin-bottom: 12px;
    align-items: center;
}

/* Thiết kế bảng dữ liệu (Tables) */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}

th {
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 16px;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Trạng thái thanh toán (Badges) */
.badge {
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-paid {
    background: var(--color-success-glow);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-unpaid {
    background: var(--color-warning-glow);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Giả lập SePay (Webhook Simulator) */
.simulator-panel {
    background: linear-gradient(135deg, rgba(23, 33, 53, 0.9), rgba(15, 23, 42, 0.95));
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
}

.simulator-log {
    background: #000;
    font-family: monospace;
    font-size: 12px;
    padding: 12px;
    border-radius: 8px;
    max-height: 180px;
    overflow-y: auto;
    color: #4ade80;
    margin-top: 12px;
    border: 1px solid var(--border-color);
}

/* THIẾT KẾ TRANG PHIẾU THU KHÁCH XEM (INVOICE PAGE) */
.receipt-wrapper {
    max-width: 700px;
    margin: 40px auto;
    padding: 16px;
}

.receipt-card {
    background: linear-gradient(180deg, #182235 0%, #111a2e 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
}

.receipt-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.receipt-header {
    text-align: center;
    margin-bottom: 36px;
}

.receipt-header h2 {
    font-size: 24px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 12px;
    color: var(--text-primary);
}

.receipt-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.receipt-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 20px 0;
    border-top: 1px dashed var(--border-color);
    border-bottom: 1px dashed var(--border-color);
    margin-bottom: 32px;
}

.receipt-meta-item span {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

.receipt-meta-item strong {
    font-size: 15px;
    color: var(--text-primary);
}

.bill-items {
    margin-bottom: 32px;
}

.bill-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.bill-item-name {
    font-weight: 500;
    color: var(--text-primary);
}

.bill-item-sub {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

.bill-item-value {
    font-weight: 600;
    color: var(--text-primary);
}

.bill-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    margin-top: 8px;
    border-top: 2px solid var(--border-color);
}

.bill-total-label {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.bill-total-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-primary);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

/* Bảng quét mã thanh toán */
.payment-section {
    background: rgba(10, 15, 30, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    margin-top: 24px;
}

.qr-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: center;
    margin-top: 20px;
}

@media (max-width: 600px) {
    .qr-grid {
        grid-template-columns: 1fr;
    }
}

.qr-box {
    background: #fff;
    padding: 16px;
    border-radius: 16px;
    display: inline-block;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.qr-box img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

.payment-instructions {
    text-align: left;
}

.payment-instructions p {
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.payment-instructions p strong {
    color: var(--text-primary);
}

.copyable-field {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-primary);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 12px;
}

.copyable-field code {
    font-family: monospace;
    font-size: 14px;
    color: var(--color-primary);
    flex-grow: 1;
    overflow-x: auto;
}

.copy-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    transition: var(--transition-smooth);
}

.copy-btn:hover {
    background: var(--color-primary);
    color: #000;
}

/* Modals (Cửa sổ phóng to/nhỏ) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 90%;
    padding: 28px;
    box-shadow: var(--card-shadow);
    transform: scale(0.9);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-box {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.modal-close:hover {
    color: var(--color-danger);
}

/* Keyframes Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Lớp phủ màn hình khi hóa đơn được thanh toán */
.paid-overlay {
    text-align: center;
    padding: 24px;
}

.checkmark-circle {
    width: 72px;
    height: 72px;
    background: var(--color-success-glow);
    border: 2px solid var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--color-success);
    font-size: 36px;
    animation: scaleUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleUp {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* Phản hồi động thông báo góc màn hình */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #1e293b;
    border-left: 4px solid var(--color-primary);
    border-radius: 8px;
    padding: 16px 24px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.active {
    transform: translateY(0);
    opacity: 1;
}

.toast-success { border-left-color: var(--color-success); }
.toast-danger { border-left-color: var(--color-danger); }
.toast-warning { border-left-color: var(--color-warning); }